Section 315.128 - Calculation of credit amount(1) The amount of the tax credit allowed under ORS 315.124 shall be the sum of: (a) The certified stumpage value of standing timber in that portion of the forest conservation area that is not harvested as a result of using the standard practice harvest restrictions in lieu of the small forest owner minimum option, using the standard measuring techniques of professional foresters;(b) The cost to the small forestland owner of establishing the stumpage value, including the cost of appraisal performed by a professional forester, and of filing and recording a deed restriction as described in ORS 315.126 (3); and(c) If applicable, one-half of the certified stumpage value of retained timber in a dry channel area adjacent to the forest conservation area.(2) The certified stumpage value described in subsection (1)(a) of this section shall be multiplied by 125 percent if the small forestland owner:(a) Is barred from using the small forest owner minimum option by the horizontal lineal feet limitation applicable to fifth field watersheds; or(b)(A) Is operating on a parcel of land that is significantly disproportionately impacted by rules adopted under ORS 527.610 to 527.770, as determined by the State Forester; and(B) Has a federal adjusted gross income, as described in ORS 316.013, of not more than 125 percent of the Oregon median household income, as averaged over the three previous tax years.(3) The applicable stumpage values under this section shall be the values as of the date of filing a notification of operation under ORS 527.670, as described in ORS 315.126 (1)(a), and shall be calculated using one of the following methods: (a) The conversion return method, in which the volume of timber being retained is determined by species and log grades, and a value is established from current delivered log price information, less a reasonable cost for harvest and delivery, for the area in which the retained timber would ordinarily be sold.(b) The actual comparison method, which may be used if the timber being retained is similar in species and log grades to the timber being harvested, and which is calculated using actual revenues from the timber being harvested by the small forestland owner in the harvest area adjacent to the forest conservation area.(c) The cash flow modeling method, in which the value of standing timber is determined by using the projected volume of the stand over a harvest rotation based on species and site class, determining the value at harvest age and then discounting the value to the present date using an interest rate equal to the direct farm ownership loan interest rate of the Farm Service Agency of the United States Department of Agriculture.(4) Costs, including the cost of an appraisal and the cost of filing and recording a deed restriction, may be included in the credit amount only to the extent that the amount attributable to those costs is not claimed as an income tax deduction by the taxpayer. 2022 c. 34, § 4; 2023 c. 300, § 1